# Definition of Rigid Transformations (Developing)

## Perpendicular and Parallel

Before we begin the activity, take two minutes to remind yourself the definition of

**"perpendicular"**and**"parallel"**lines.## Translation (any BLUE points can be moved)

## Question 1

As you experiment with translation, record your initial observations. CHALLENGE: use "parallel", "perpendicular", and/or "distance" in your answers.

## Reflection (any BLUE points can be moved)

## Question 2

As you experiment with reflection, record your initial observations. CHALLENGE: use "parallel", "perpendicular", and/or "distance" in your answers.

## Rotation (any BLUE points can be moved)

## Question 3

As you experiment with rotation, record your initial observations. CHALLENGE: use "parallel", "perpendicular", and/or "distance" in your answers.

## Question 4

Why do mathematicians call these transformations "rigid"? (You may look up the definition of rigid if you do not know its meaning.)